Attachment for writing machines



Jan. 12, 1937. j SHERMAN 2,067,210

ATTACHMENT FOR WRITING MACHINES Filed April 29, 1932 Patented Jan. 12,1937 PATENT OFFICE ATTACHMENT FOR WRITING MACHINE John Q. Sherman,Dayton, Ohio Application April 29,1932, Serial No. 608,231 48 Claims.(01. 197 126) This invention relates to typewritingmachines, andparticularly to improved paper feeding and platen devices forprogressively feeding superposed manifolding webs past writing positionwhile maintaining them in aligned and registering relation. The presentconstruction comprises spaced pin wheel feeding devices havingautomatically disappearing pins engage marginally punched superposedpaper webs to advance them progressively over a stationary platensurface and relative to interleaved transfer or carbon strips or ribbonswhich are fed transversely of the record web. Means is provided forutilizing an ordinary form of friction feed means alternately with thepin type feeding devices for ordinary letter writing.

v The object of the invention is to simplify the construction as well asthe means and mode of operation of the paper feeding means formanifolding typewriters whereby it will not only be cheapened inconstruction but will be more eflicient in use, uniform and accurate inoperation, easily operated and unlikely to get out of repair.

In using pin wheel feeding devices for superpo'sed manifolding forms, itis quite unnecessary that the ordinary rotary platen be employed sincethe relatively spaced pin wheels operatively engaging with the marginsof the superposed manifolding webs are sufficient to feed and controlthe travel thereof. Therefore a further object of the invention is todispense with the usual rotary platen and provide, in lieu thereof, astationary platen bar which will afford a stationary solid surfaceagainst which the type bars impinge at-the writing position.

A further object of the invention is to provide a pin type feedingmechanism which is adjustable to accommodate paper webs of differentwidths. i v

A further object of the invention is to provide means whereby theordinary type of friction feed mechanism may be employed for ordinaryletter writing alternately with the employment of the pin type feedingdevices.

A further and important object of the invention is to provide means forutilizing transfer or carbon strips or ribbons fedtransversely of therecord webs in combination with pin type feeding devices.

A further object of the invention is to provide improved transfer ribbonguide and protective means.

With the above primary and other incidental objects in view as will morefully appear in the trating portions specification, the inventionconsists of the features of construction, the parts and combinationsthereof, and the mode of operation, or their equivalents, as hereinafterdescribed and set forth in the claims. w 5

Referring to the accompanying drawing wherein is shown the preferred butobviously not necessarily the only form of the embodiment of theinvention, Fig. l is a perspective view of a typewriting machine towhich the present in- 10 vention has been applied; Fig. 2 is an endelevation of the traveling typewriter carriage illus-- of the presentirivention mounted thereon. Fig. 3 is a perspective view of the paperfeeding devices of both frictional l5 and pin wheel type together withthe stationary platen and the transfer strip guide and protective means.Fig. 4 is a detail sectional view of one of the pin wheel feedingdevices disclosing the means for operating the disappearing pins. 20Fig. 5 is a detail view of one of the feeding pins removed from the pinwheel feed device. Fig. 6 is a. side view of the mounting heads for thefeeding pins. Fig. '7 is a side elevation of the actuating cam by whichthe feeding pins are progressively extended and retracted as the feedingwheel rotates. Fig. 8 is a detail perspective view of one of the carbonstrip guiding and protective arms. Fig. 9 is a detail view of theadjusting and retaining means for the pin wheel feed mechanism by whichthe latter may be adjusted into and out of operative position.

Like parts are indicated by similar characters of reference throughoutthe several views.

In the drawing l is a conventional form of purpose of illustrating theapplication of the present paper feeding and platen devices.

Revolubly journaled in the traveling carriage v 51 of the typewriter andprogressively rotated by the usual line spacing mechanism, is a rotaryshaft 8 corresponding. to the usual platen shaft of a conventionaltypewriter. Secured upon the shaft 8 at spaced intervals are rotary pinwheels 55 the shaft 8 for unison rotation therewith, the

wheels being capable of relative adjustment toward and from each otherupon the shaft to accommodate paper webs of different widths. The headl2 of each wheel is provided with radial recesses or'grooves M, as shownin Fig. 6, in

- tion while the preceding pins are being simulwhich the feeding pins IDare mounted for reciprocatory motion. Located adjacent to the head l2and the series of radial pins l9 slidingly supported thereon, is astationary cam member l5 having a projecting cam flange l6, shown indetail in Fig. 7, which engages within notches II in the respectivefeeding pins Ill. The actuating cam I5 is stationarily carried upon asleeve or tube l9 surrounding the shaft 8 while the feeding wheelrotates relative thereto carrying with it the pins Id. The actuating camI5 is so shaped that the feeding pins III are maintained in retractedpositions throughout a suitable portion of their path of travel and areprojected outwardly beyond the periphery of the wheel 9 only as theyapproach the web engaging position. The cam is so shaped that only acomparatively few of the feeding pins ID are projected beyondtheperipheral surface of the wheel at the same time. These pins normallyengage the paper webs in proximate relation to,'but preferably justbeyondthe writing position. While corresponding feeding pins of eachwheel are in operative feeding engagement with the webs/the succeedingpins are being projected into such operative positaneously retracted.Thus the pins do not interfere with adjacent parts of the machinestructure, and having engagement with comparatively few holes of thepaper webs at the same time will feed the webs uniformly withoutsubjecting them to undue strain or tearing the webs adjacent to theholes. The particular disappearing pin mechanism heretofore referred tois shown and claimed in copending application Serial No. 542,855, filedJune 8, 1931.- The mounting-sleeve 9 is held stationary by an arm 29secured thereto and having en a ement with a cross rod 2| of thetypewriter carriage. However in lieu of fixedly securing the arm 20directly to the mounting tube or sleeve I9 which carries the actuatingcam l5, the sleeve l9 may be provided with a' notched head or knob 22 asshown in Fig. 9, and the arm 20 may be provided with a locking detent orlatch member 23 engageable alternately in the respec-' tive notches 26of the knob 22 to hold the knob and therewith the mounting sleeve ortube l9 in either of two rotative positions. By rocking the sleeve ortube 9 and therewith the actuating cam IS the position at which thefeeding pins ll] are projected beyond. the peripheries of the wheels 9may be changed. Instead of projecting the pins at a position foroperative engagement with the punched paper web, they may be caused toproject in an inoperative position in which the webs will not beengaged. This'adjustability 'of the feeding pins to inactive positionenables the usual form of friction feed roller 25-25,. ordinarlly foundin suchtypewriter construction to aoo'zaio 9, each having a successionof radially disposed be utilized in conjunction with the peripheralfaces l9 of the feed wheel for feeding unpunched paper'webs or lettersheets. rollers are moved into and out of operative relation with theperipheral surfaces of the feed wheels 9 by the usual finger trip lever26 and link 21. The construction shown is the conventional friction feedmechanism and per se forms no part of the present invention except sofar as in relation to andco-operates with the pin wheel devices 9. Thesefriction rollers 25 co-operate with that portion of the pin wheels 9within which the feeding pins l0 have been retracted. As beforementioned during such operation the actuating cam l5 has been adjustedto project the feeding pins In only through that portion of the feedwheel periphery beyond the range of the These friction feed paper orintermediate the point where the paper 1 contacts the feed wheels 9 inentering the ma-" progressively advanced by the rotation of the feedwheels 9 either by engagement of the pins 10 or by coaction of thefriction rollers 25 and is thus carried past the platen bar 39' which isstationarily supported by the discs 29.

Supported upon the frame rod 2| are curved arms 32 having at their endsplate like heads 33, the margins of which are reversely turned-at 34 toafford guides for the carbon or transfer stripsv or webs as they enterbetween thesuperposed webs of record material and as they leave suchwebs at the opposite side of the machine; Suchguides insure the stripsentering between the record webs snioothly and uniformly, and protectthe strips at such point and prevent them from being displaced by theadvance movement of the record webs. These guide arms 32 are preferablypivoted to l the frame rod 2| to enable them to be turned out ofoperative position when the record webs and the carbon strips.

The

Slotted keeper fingers 35 are mounted upon I the frame rod 2| andoverlie the record webs to loosely retain the punched margins of therecord webs in operative'engagement with the projected pins i9 which areprogressively projected through the holes in the superposed webs intothe slot of the keeper member 35.

The retractive action of the feeding pins in en able the use oftransversely traveling transfer or carbon ribbon which otherwise wouldbe unusable due to interference with pins of the feeding wheels 9 acrossthe faces of which the strips must be advanced. However in theconstruction as described the carbon strips or ribbons pass in proximityto the smooth portions only of the feeding wheels, the pins l0 beingprojected beyond the peripheries of the wheels only beyond the locationof the carbon ribbon. By this construction it is possible to usemanifolding ribbons with a pin wheel feed device since the pin wheelsfeed thesuperposed forms loosely without friction tension and thedisappearing pins clear the carbon ribbon. If pin wheels of the fixedradial pin type were employed, they would necessarily engage with thepunched paper at all points contiguous to the writing line and henceinterfere with and tear the transfer ribbons. By the presentconstruction multiple carbon ribbons may be successfully'utilized withpin wheel type feeding devices and also the ordinary frictional typepaper feeding mechanism may be utilized in conjunction with the pinwheel feed devices for feeding ordinary unpunched letter sheets.

From the above description it will be apparent that there is thusprovided a device of the character described possessing the particularfeatures of advantage before enumerated as desirable, but whichobviously is susceptible of modification in its form, proportions,detail construction and arrangement of parts without departing from theprinciple involved or sacrificing any of its advantages.

While in order to comply with the statute the invention has beendescribed in language more or less specific as to structural features,it is to be understood that the invention is not limited to the specificfeatures shown, but that the means and construction herein disclosedcomprise the preferred form of several modes of putting the inventioninto efiect, and the invention is therefore claimed in any of its-formsor modifications within the legitimate and valid scope of the appendedclaims.

Having thus described my invention, I claim:

1. In a typewriting machine, a pair of spaced pin wheel feeding deviceshaving disappearing pins about which paper is fed circumferentially, astationary platen bar interposed between the wheels and substantiallycoincident with the peripheries thereof, and carbon strip feeding meansfeeding transfer strips transversely of the paper webs in registry withthe platen bar. 2. In a typewriting machine, a pair of spaced pin wheelfeeding devices having disappearing feeding pins, a stationary platensurface intermediate the feeding wheels and friction feeding rollersengageable with the peripheries of the feeding wheels and operablealternately with the feeding pins for advancing record material acrossthe platen surface.

3. In a typewriting machine, the combination of a stationary writingplaten with pin wheel feed mechanism including reciprocatory feedingpins engageable in marginally punched holes in writing material to feedthe writing material .past the writing platen for feeding the writingmaterial in a circumferential path around said platen, a shaft carryingsaid pin wheel feed mechanism, means carried by said shaft for causingthe pins of said pin wheel feeding mechanism to have a rectilinearmovement when entering and leaving the record material, said platenincluding a plurality of spaced supports carried by said shaft, havingmounted thereon a platen bar. v

4. In a writing machine, the combination of a stationary platen with apin wheel feed mechanism for advancing the record material through acurviiinear path about said platen, said pin wheel feed mechanismincluding means simultaneously engaging all of the pins for controllingthe path thereof, said means causing the pins to move into apertures inthe record material along the-radius of curvature thereof, said meanscausing the pin wheel feed mechanism to have an operative and aninoperative position.

5. In a writing machine, the combination of a stationary platen with apin wheel feed mechanism for supplying writing material in acircumferential path around said platen, said pin wheel feed mechanismincluding a pair of spaced wheels, said platen including a platen barextending between the spaced wheels, and a carbon strip feedingmechanism independent of said pin wheel feeding mechanism.

6. In a writing machine, a stationary writing platen including a shaft,a bar carried by a series of spaced discs mounted upon the shaft, aribbon feeding mechanism, a carbon strip feeding mechanism independentof said ribbon feeding mechanism, and a pin wheel feeding mechanismunderlying a portion of the carbon strip feeding mechanism for supplyingrecord material circumferentially about the platen.

7. In a writing machine, the combination of a stationary platen having abar with fee ng mechanism, said feeding mechanism includ ng a pin wheelpaper feeding mechanism supplying writing material in a circumferentialpath about said platen, a shaft supporting said mechanism, a mountingcarried by the shaft for supporting the platen and a carbon stripfeeding device independent of said pin wheel mechanism.

8.- In a writing machine, a stationary platen, a pin feeding mechanismfor advancing the writing material circumferentially past saidstationary platen, a shaft for said mechanism,'a mounting carried by theshaft for supporting the platen and a mechanism for guiding a strip ofcarbon transversely to the movement of the writing material.

9. In a typewriting machine, a stationary platen, a rotary pin feedingmechanism for advancing the writing material past the platen, a shaftfor supporting the feeding mechanism and a second shaft concentric withthe first'shaft for supporting the platen and a feeding mechanism forfeeding a car'- bon strip at right angles to the path of movement of thewriting material.

10. In a typewriting machine, a stationary platen, a pair of pin wheelshaving feeding pins for advancing the writing material circumferentiallypast the stationary platen, said feeding pins entering the recordmaterial along the radius of curvature thereof, a shaft for carryingsaid pin wheels, said pin'wheels being adjustably mounted on the shaftso that the distanceof the spacing intermediate the pin wheels may beadjusted to accommodate difi'erent widths of writing material.

11. In a writing machine, the combination of a stationary platen withfeeding mechanism, in-

eluding pin wheels for advancing the writing material, a support forsaid pin wheel feeding mechanism, said pin wheels being adjustablymounted L on said support, a carbon strip feeding mechanism independentof said pin wheel feeding mechanism, said carbon strip feeding mechanismincluding guides adjustably mounted so as to be adjusted with theadjustment of pin wheel feed mechanism so that the writing machine mayaccommodate various widths of material.

12. In a'yvriting machine, a stationary platen, a pair of pin wheelsrotatively mounted for advancing the writing material past the platen,mov able guides associated with the wheels, said guides being common toall the pins, said pin wheels having an operative and an inoperativeposition determined by the position of said guides, and a frictionfeeding mechanism for supplying the writing material to the stationaryplatenwhensaid friction feeding mechanism bei'iig in inoperativeposition when the pin wheel feeding mechanism is in operative position.

14. In a writing machine, a stationary platen, a pair of pin wheels foradvancing the writing material past the platen, said pin wheels havingan operative and an inoperative position, and a friction feedingmechanism for supplying writing material to the stationary platen whenthe pin wheel feed mechanism is in inoperative position, said frictionfeeding mechanism being in inoperative position when the pin wheel feedmechansm is in operative position.

15. In a writing machine, a stationary platen, a pair of wheels foradvancing the writing material, said wheels having pins extendingthrough their periphery for positively advancing the writing material,said pins having operative and ma,

operative positions, and friction mechanism cooperating with said wheelsfor frictionally advancing the writing material when the pins are ininoperative position.

16. In a writing machine, the combination of a stationary platen with afeeding mechanism, said feeding mechanism including a pin wheel paperadvancing device, and a carbon strip feeding device, said carbon stripfeeding device including means overlying said paper feeding mechanism.

17. In a writing machine, a stationary platen, a pin feeding mechanismfor advancing the writing material past said stationary platen, and adevice for guiding-a strip of carbon transversely to the movement of thewriting materiaLsaid guiding device overlying said pin feedingmechanism.

18. In a typewritlng machine, a stationary platen, a rotary pin feedingmechanism for advancing the writing material past the platen, andafeeding mechanism including a guide for supplying a carbon strip atright angles to the path of movement of the writing material, each ofsaid mechanisms being adjustably mounted so as to accommodate writingmaterials of various widths.

19. In a typewriting machine, the combination of a stationary platenwith a pin wheel feeding mechanism having the pins extending through thewheel thereof, said pin wheel feeding mechanism having an operative andan inoperative position, said feeding mechanism, when in inoperativeposition, having the pins extending through the wheel out of contactwith the writ ing material and means for-actuating the pin to saidplaten, said means including pin feeding devices, said pin feedingdevices having an operative position and an inoperative'position, and

means for supplying writing material to the platen when said first meansis in inoperative position.

22. In a typewriting machine, the combination of a stationary platenwith means for positively feeding the Writing material circumferentiallypast said platen including pins having a movement coincident with theradius of curvature of the record material and positively engagingopposite sides of the paper between which the 23. In a writing machine,the combination 0;.

a stationary platen including a platen bar, a

shaft and a plurality of spaced supports, mount ed-on said shaft forsupporting the platen bar with a pin wheel feeding mechanism for supplying writing material circumferentially to said platen, said pin wheelfeeding mechanism engaging opposite edges of the writing materialbetween which the writing takes place, means for rendering the pin wheelfeeding mechanism ineffective for indefinite periods at the will of theoperator and auxiliary feeding means for feeding the writing materialduring ineffectiveneriods of the pin wheel feedingmechanism.

24. In a writing machine, the combination of a stationary platen withfeeding mechanism, said feeding mechanism including a pin wheel feedingmechanism supplying writing material to said platen, said pin wheelfeeding mechanism including feeding pins having a rectilinear movementcoincident with the radius of curvature of the record material, and acarbon strip feeding device for supplying a carbon strip independentlyof said pin wheel feeding mechanism but adjacent thereto, said carbonstrip feeding mechanism including adjustable guides for supplying carbonstrips to the platen intermediate the pin feeding wheels.

25. In a writing machine, a stationary platen having a writing positionpast which record material is progressively advanced, record materialfeeding means including a rotary pin wheel the pins of which areengageable in marginally punched holes in the record material topositive-= 1y advance the record material past the writing position, anda pressure roller cooperating with the periphery of the pin wheel andengageable with the margin of the record material to advance the recordmaterial past the writing posi= tion independently of the feeding actionof the pins and means for rendering the respective feeding deviceseffective or ineifective at the will of the operator.

26. In a writing machine, a stationary platen past which record materialis progressively advanced, dual optionally selective feeding devices forthe record material located at each end of the stationary platen andmeans for rendering the respective feeding devices eifectivejqrineifective at the will of the operator for-advancing the recordmaterial past the platen by the respective devices alternately. 3

27. In a writing machine,-a stationary platen past which record materialis progressively advanced, dual optionally selective feeding dc,-

' vices for the record material located at each end of the stationaryplaten, in'cludinga pin type feeding device engageable in marginallypunched apertures in the record material for positively advancing therecord material past the stationary platen and pressure rollers havingfric-' -wheels when the pins are retracted and operable tionalengagement with record material for impositively advancing recordmaterial pastv the stationary platen, and means for rendering therespective feeding devices effective or ineffective at the will of theoperator.

28. In a writing machine, a stationary platen' platen, pressure rollersfrictionally engageable with marginal portions of the record materialfor advancing the record material past the stationary platen,independently of the feeding pins, said rotary wheels being common tothe feeding pins and the pressure rollers to effect advancement of therecord material by action of one or the other upon rotation of thewheels.

29. In a writing machine a dual optionally selective record materialfeeding means, including a pair of spaced rotary members, a stationaryplaten member interposed therebetween having a writing position pastwhich record material is advanced, a series of feeding pins engageablein marginally punched holes in the record material for positivelyadvancing the record material past the writing position, pressurerollers engageable with the record material for advancing the recordmaterial past the writing position independently of the feeding pins,said rotary spaced membersbeing'eommon to the feeding pins and thepressure rollers for effecting feeding operation thereof'by the rotationof said rotary members. k

30. A dual optionally selective record material feeding means for awriting machine, including a stationary platen having a writing positionpast which the record material is progressively advanced, a pair ofspaced wheels located one at each end of the platen, feeding pinscarried by the pin wheels for engagement in marginally punched holes inthe record material for positively advancing the record material pastwriting position, pressure rollers cooperating with said wheels forimpositively feeding the record material past the writing position, andmanually adjustable means for rendering either .of the feeding devicesoperative or inoperative at the will of the operator.

31. A writing machine including a stationary platen having a writingposition past which record material is advanced, a pair of spaced rotarywheels located respectively beyond the limits of the platen, a pluralityof feeding pins engageable in marginally punched holes in the recordwith the marginal portions of the record material to impositivelyadvancarecord' material past the writing position, said rotary wheelsbeing common to both the feeding pins and the pressure rollers to effectadvancement of the record material by either the pins or rolle'rs' uponrotation of the wheels.

32. In a type writing machine a pair of spaced pin wheel feeding deviceshaving disappearing pins engageable in marginally punched apertures inrecord material to be fed when said pins are extended, a stationaryplaten surface intermediate the feeding wheels,- frictional feedingrollers engageable with the peripheries of the feeding alternately withthe feeding pins for advancing record material past the platen and meansfor retracting the pins from feeding relation with the material.

33. In a writing machine wherein superposed strips of record materialand strips of transfer material interleaved between the strips of recordmaterial are progressively advanced in transverse paths of travel,-pintype feeding means engageable in marginal apertures in the recordmaterial for advancing the record material past a writing position andguide means for the transfer strips bridging the path of travel of thepin type record material feeding means.

34. In a writing machine wherein superposed strips of record materialand strips of transfer material interleaved between the strips of recordmaterial are progressively advanced in transverse paths of travel, pintype feeding means engageable in marginal apertures in the recordmaterial for advancing the record material past awriting position thepin type feeding means and the transfer strips being movable intransverse paths of travel and means for automatically retracting thepin type feeding devices out of inof transfer material are advancedthrough transverse paths of travel, a traveling pin type feeding devicehaving disappearing pins engageable in marginal apertures in the recordmaterial for progressively advancing the record material past a writingposition'and guide means for the feeding pins of the pin type feedingdevice and the transfer strips defining non-interfering paths of travel.

36. In a writing machine wherein superposed strips of record materialand interleaved strips of transfer material are advanceii'througlrtransverse paths of'travel, a traveling pin type feeding deviceengageable in marginal apertures in the record material forprogressively advancing the record material pasta writing position, thefeeding pins of said pin type feeding devices being retractable, andmeans for retracting the pins beneath the plane of travel of thetransfer strips during their travel motion past such strips.

37. In a writing machine wherein superposed strips of record materialand interleaved strips .of transfer material are advanced throughtransprogressively advancing the record material past a writingposition, and guide means for the transfer strips directing the transferstrips transversely of the path of travel of the pin type feedingdevice, in offset relation therewith, whereby interference therebetweenwill be avoided.

38. Pin type record material feeding means for writing machines having aplaten with a flat writing surface including a revoluble shaft, 9.plurality of rotary pin wheel material feeding devices engageable inspaced apertures in the record material, carried thereon and axiallyadjustable relative to eachother, a plurality of rela tively spaceddiscs located intermediate the pin wheel feeding devices concentricallytherewith, said disks being tangentially disposed with respectto theplane of the writing surface, and means for rotating the shaft.

39. In a type writing machine, a platen having the platen, a rotaryshaft upon which the pin wheel feeding devices are adjustably mountedfor relative movement toward and from each other-to accommodate recordmaterial of different widths, and guide members mounted concentric withsaid shaft intermediate the pin wheel feeding devices for supporting therecord material intermediate the pin wheel feeding devices, said guidemembers supporting the record material in substantially the plane of thewriting surface.

40. Pin type record material feeding means for a writing machine .havinga platen having a substantially flat writing surface, including a rotaryshaft, a pair of spaced pin wheels carried thereby the pins of which areengageable in marginal apertures in record material to advancethe recordmaterial past a writing position, a plurality of discs mountedconcentric with the shaft intermediate the pin wheels, the discs and pinwheels being of approximately equal diameters and means to rotate theshaft.

41. In a typewriting machine, a platen, a pin type feeding mechanismhaving pins entering the record material in a direction substantiallynormal to the radius of curvature thereof for advancing writing materialpast the platen and a feeding mechanism for feeding superimposed carbonstrips at right angles to the path of the writing material.

42. A writing machine for use with various widths of continuous lengthrecord material including a platen, a, pair of spaced. rotary pin wheelunits mounted in relative axial adjustment toward and from each other toenable the engagement of their pins in holes in the record material ofdifierent widths, and a plurality of relatively spaced record materialsupporting discs located intermediate the pin wheel units and concentrictherewith, said discs being tangentially disposed to a plane common tothe surface of. the platen and the pin wheel units, and actuating meansfor imparting rotary motion to the pin wheel units.

43.-A writing machine for use with continuous length record materialincluding a platen having a substantially flat writing surface, a pairof spaced rotary pin wheel units, the pins of which are engageable inmarginally punched holes in record material tobe fed thereby, and aplurality of discs concentrically disposed with said pin wheel units andtherebetween, the pin wheel units and discs being axially adjustable onerelative to the other, andtangentially disposed with respect to theplane of the writing surface and actuating means for imparting rotary.motion to the pin wheel units.

.44. A writing machine for use with continuous length record materialincluding a' platen having aoe'aaro ing a platen with a flat writingsurface, a feeding device including a pair of spaced pin feeding deviceseach having feeding pins engaging punched holes in the record material,means for actuating thepin feeding devices to advance the recordmaterial across the writing surface and through an arcuate path, andarcuate record material guiding members tangentially disposed withrespect to the plane of the writing surface and mounted intermediate thepin feeding devices.

46. A writing machine for use with record material having feed holespunched therein, including a platen having a fiat writing surface, afeeding mechanism including a pair of spaced pin feed devices eachhaving pins engaging the apertures in the record material to feed thesame across the flat writing surface and through an arcuate pathtangentially disposed with respect to the plane of the writing surface,and arcuate record material supporting means for guiding the recordmaterialthrough the arcuate path tangentialiy disposed with respect tothe surface of the platen, said supporting means being arrangedcontiguous to the pin feeding mechanism.

-4'7. In a writing machine foruse with continuous length recordmaterial, the combination of a platen with means for feeding and align--ing the record material, and a plurality of relatively spaced discsassociated with thefeeding means, said discs being tangentially disposedwith respect to a plane through which the record material passes, saidplane being common to the surface of the platen and the feedingmeans,and actuating means for imparting motion to the feeding means. V

48. In a writing machine. the combination of a platen with alternativelyselective feeding mechanism for advancing the record material relativeto the platen, including travelling pin type feeding means engageable inlongitudinally paced holes in the record material for advancing therecord material past a writing position, a support upon which the pinWpe feeding means is laterally adjustable to accommodate 'difierentrecord material, and a frictional feeding means for advancing recordmaterial relative to the platen during nonoperative periods of the pintym feeding means.

